UCODE I2C - I2C Write to secured USER MEMORY?

I have a UCODE I2C device which has a none zero access password and the user memory is set in the secured state. When the user memory is set the open state, I2C writes to the user memory work ok. How can I write the user memory via the I2C interface when the user memory is set to the secured state?

It was my understanding too from the datasheet that it could be accessed. I've managed to work around it by unlocking the bank writing to the user memory then relocking it but I don't really like the idea of doing this even though it happens relatively quickly.